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December 22, 2014

December 22, 2014

Posted by **Energy** on Wednesday, January 12, 2011 at 9:03pm.

a.) calculate the normal force on the box

b.) calculate the work the rope does on the box

c.) Calculate the box’s change in kinetic energy

d.) Calculate the work that friction does on the box.

e.) Calculate the force of friction on the box.

f.) Calculate the coefficient of sliding friction between the box and the floor.

g.) Calculate the student’s power.

- physics -
**bobpursley**, Wednesday, January 12, 2011 at 9:09pmnormal force on box: mg-25sin37

work done by rope: 25cos37*10+1/2 m(7^2-3^2) that is the work done by the pulling plus the change in KE.

I will be happy to critique your work.

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